<template>
  <div class="about">
    <h1>This is an about page</h1>
  </div>
</template>
<script setup lang="ts">
const xiaoming = {
  name: 'xiaoming',
  phoneBattery: 70,
  change: function (level) {
    this.phoneBattery = level
    console.log('hello',this.phoneBattery,level)
  }
}
const xiaoli = {
  name: 'xiaoli',
  phoneBattery: 30
}

xiaoming.change.call(xiaoli,10)
xiaoming.change.apply(xiaoming,[10])
xiaoming.change.bind(xiaoming,10)()

</script>
